Wireshark on Giga Bit Ethernet

Hi,

As Gigabit Ethernet handles high speed data, How can I use wireshark to analyze iperf TCP data for 120Sec duration..

Note following observations made on Red hat linux

1) Getting 250Mbps througthput by i-perf application 2) Wireshark application is slow, (even after completion of data transered confirmed by i-perf final result, Frames are displaying slowly crashing after some time) 3) While capturing, Packet drops are observed on the bottom (i.e at captured / displayed / marked / dropped)

Regards M Srinivasa Rao